3. Where is the femur located in human body!
ve
4. What are tendons?
5. What is the name given to the animals with backbone? V
6. What kind of a skeleton does a cockroach have?
Short answer type questions:
1. List any three functions of the skeleton.
2. Why are the last ribs called the floating ribs?
3. What is a pivot joint? Give an example.
4. What is a ball and socket joint?
5. Why are at least two muscles needed to move a bone at aj
6. What are the functions of the spine?
. Long answer type questions:
1 Explain locomotion in inskects.
Answers
Answer:
3. The femur is the only bone located within the human thigh. It is both the longest and the strongest bone in the human body, extending from the hip to the knee.
4. Overview. A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure.
5. vertebrates
vertebratesThe animals with backbone are called vertebrates.
6. exoskeleton
exoskeletonMost cockroaches have three joints on each leg, which means they have 18 knees! The skeleton is made of a hard substance called chitin. When a skeleton is on the outside, it is called an exoskeleton. The exoskeleton supports and protects the roach's insides.
short answer:
1. The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals.
2. The phrase floating rib or vertebral rib (Latin: costae fluctuantes) refers to the two lowermost, the eleventh and twelfth rib pairs; so-called because they are attached only to the vertebrae–and not to the sternum or cartilage of the sternum.
3. An example of a pivot joint is the joint of the first and second vertebrae of the neck that allows the head to move back and forth (Figure 4). The joint of the wrist that allows the palm of the hand to be turned up and down is also a pivot joint.
4. Ball-and-socket joint, also called spheroidal joint, in vertebrate anatomy, a joint in which the rounded surface of a bone moves within a depression on another bone, allowing greater freedom of movement than any other kind of joint.
5. A single muscle can only pull, it cannot push. Thus, muscles work in pairs to move a bone. When one muscle contracts, it pulls the movable bone. When another muscle of the pair pulls, it brings the bone back to its original position.
6. It gives your body structure and support. It allows you to move about freely and to bend with flexibility. The spine is also designed to protect your spinal cord. The spinal cord is a column of nerves that connects your brain with the rest of your body, allowing you to control your movements.
Long answer :
7. Adult insects typically move about by walking, flying, or sometimes swimming. As it allows for rapid yet stable movement, many insects adopt a tripedal gait in which they walk with their legs touching the ground in alternating triangles, composed of the front and rear on one side with the middle on the other side.
Insects typically have three pairs of jointed legs, one pair on each of the thoracic segments. ... In most insects, the primary function of the legs is to enable walking on land, but modifications of their structure allow them to be used in other kinds of locomotion, including jumping, swimming and walking on water.
Locomotion: Movement from one place to another. And the ability to locomote, to get from one place to the next. ... Locomotion is derived from the Latin "locus", place + "movere", move = move place.
thanks..
❤️Tanvi here ❤️